The n-fold basis property of the characteristic functions of certain regular boundary-value problems
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2006 ◽
Vol 42
(12)
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pp. 1717-1728
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1999 ◽
Vol 197
(1)
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pp. 157-187
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2009 ◽
Vol 233
(2)
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pp. 420-436
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2006 ◽
Vol 320
(1)
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pp. 1-19
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